White hat hacker :

 a white hat is a hacker paid and work for a government agency to deliberately hack into a computer mainframe any potential weaknesses to be found in a computer mainframe,

 and

 then figure out how to get them to loose.

Green Hat hacker :

A  Green Hat is a name for a new / newb hacker, who just started to practice hacking.

 Green Mages are related to "Newbs" due to the fact that they show a desire to learn about hacking and listen to more experienced hackers,

 and

 they do not suffer from ADHD-like Noobdom Blue Hats.

Blue Hat hacker :

 Blue Hat-A is a rouge hacker who hacks for fun or to get revenge on a certain person or company that could harm them.

 You should avoid angering or insulting Blue Hats should be very easy due to the fact that most Blue Hats are passive in nature and would rather practice on a person they really hate.

Blue Hats is related to "noobs" because of the fact that they do not really care that much about hacking.

Red Hat hacker :

A Red Hat Red Hat, is an aggressive version of a White Mage in the service of a government agency whose mission is to hack into the main computer of other governments in order to stop or Cripping them...

Grey Hat hacker::

A  Grey Hat is a hacker who share White Hat and some black hat. They can be both helpful and harmful, and should be treated with respect ....

The Grey Hat's name comes from the fact that a Grey Hat halfway between a black hat and a white hat, and can be both harmful and helpful....